AP Calculus BC Exam. The Calculus BC Exam. At a Glance. Section I. SECTION I: Multiple-Choice Questions. Instructions. About Guessing.
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1 The Calculus BC Exam AP Calculus BC Exam SECTION I: Multiple-Choice Questions At a Glance Total Time 1 hour, 45 minutes Number of Questions 45 Percent of Total Grade 50% Writing Instrument Pencil required Number of Questions 28 Time 55 minutes Electronic Device None allowed Part B Number of Questions 17 Time 50 minutes Electronic Device Graphing calculator required Instructions Section I of this exam contains 45 multiple-choice questions and 4 survey questions. For, fill in only the ovals for numbers 1 through 28 on page 2 of the answer sheet. For Part B, fill in only the ovals for numbers 76 through 92 on page 3 of the answer sheet. The survey questions are numbers 93 through 96. Indicate all of your answers to the multiple-choice questions on the answer sheet. No credit will be given for anything written in this exam booklet, but you may use the booklet for notes or scratch work. After you have decided which of the suggested answers is best, completely fill in the corresponding oval on the answer sheet. Give only one answer to each question. If you change an answer, be sure that the previous mark is erased completely. Here is a sample question and answer. Sample Question Chicago is a (A) state (B) city (C) country (D) continent (E) village Sample Answer cs> ^^ (ID <3D CE) Use your time effectively, working as quickly as you can without losing accuracy. Do not spend too much time on any one question. Go on to other questions and come back to the ones you have not answered if you have time. It is not expected that everyone will know the answers to all of the multiple-choice questions. About Guessing Many students wonder whether or not to guess the answers to questions about which they are not certain. In this section of the exam, as a correction for random guessing, one-fourth of the number of questions you answer incorrectly will be subtracted from the number of questions you answer correctly. If you are not sure of the best answer but have some knowledge of the question and are able to eliminate one or more of the answer choices, your chance of answering correctly is improved, and it may be to your advantage to answer such a question. 56
2 Calculus BC Section I CALCULUS BC SECTION I, Time 55 minutes Number of questions 28 A CALCULATOR MAY NOT BE USED ON THIS PART OF THE EXAM. Directions: Solve each of the following problems, using the available space for scratch work. After examining the form of the choices, decide which is the best of the choices given and fill in the corresponding oval on the answer sheet. No credit will be given for anything written in the exam book. Do not spend too much time on any one problem. In this exam: (1) Unless otherwise specified, the domain of a function / is assumed to be the set of all real numbers x for which /(jc) is a real number. (2) The inverse of a trigonometric function / may be indicated using the inverse function notation /~ or with the prefix "arc" (e.g., sin"1* = arcsin x ). GO ON TO THE NEXT PAGE. 57
3 Calculus BC 1. At time t > 0, a particle moving in the xy-plane has velocity vector given by v(t) - (t, 5n. What is the acceleration vector of the particle at time t = 3? (A) /9,4r) (B) (6,5) (C) (2,0) (D) V306 (E) VoT 2. (A) ±ex +C (B) ex +C (C) xex +C (D) (E) e2* + C 0,. smxcosj. 3. lim is (A) -1 (B) 0 (C) 1 (D) ^- (E) nonexistent 58 GO ON TO THE NEXT PAGE.
4 Calculus BC Section I v e 4. Consider the series X r- If the ^atio test is applied to the series, which of the following inequalities results, implying that the series converges? (A) lim -^ < 1 (B) lim < 1 n^oo e,,,. n +1, (C) lim < 1 «-H>OO e (D) lim e - < 1 n >oo n + 1 (E) lim ^ <1 «+ 1)! 5. Which of the following gives the length of the path described by the parametric equations x = sin(r ) and y = e5' from t = (A) dt (B) (C) (D) J* \J3t2 cos(?3) + 5e5t dt (E) GO ON TO THE NEXT PAGE. 59
5 Calculus BC y if X * 2 if x = 2 6. Let / be the function defined above. Which of the following statements about / are true? I. / has a limit at x = 2. II. / is continuous at x = 2. III. / is differentiable at x = 2. (A) I only (B) II only (C) III only (D) I and II only (E) I, II, and III 7. Given that y(l) = -3 and -j- - 2x + y, what is the approximation for y(2) if Euler's method is used with a step size of 0.5, starting at x = 11 (A) -5 (B) (C) -4 (D) (E) GO ON TO THE NEXT PAGE.
6 Calculus BC Section I X M _ The function / is continuous on the closed interval [2,13] and has values as shown in the table above. Using the intervals [2, 3], [3, 5], [5, 8], and [8,13], what is the approximation of I f(x) dx obtained from a left Riemann sum? (A) 6 (B) 14 (C) 28 (D) 32 (E) 50 Graph of/ 9. The graph of the piecewise linear function / is shown in the figure above. If g(x) - f(t) dt, which of the following values is greatest? (A) g(-3) (B) g(-2) (C) (D) (E) g(2) GO ON TO THE NEXT PAGE. 61
7 Calculus BC 10. In the jry-plane, what is the slope of the line tangent to the graph of x + xy + y = 7 at the point (2,1)? (A) - j (B) -f (C) -1 (D) - (E) -f 11. Let R be the region between the graph of y - e x and the x-axis for x > 3. The area of R is 1 (A) (B, - 4 e <D>f5 2e (E) infinite 62 GO ON TO THE NEXT PAGE.
8 Calculus BC 10. In the.ry-plane, what is the slope of the line tangent to the graph of x2 + xy + y2 = 1 at the point (2, 1)? (A) - (B) -f (Q -1 (D) - (E) -f 11. Let R be the region between the graph of y = e x and the x-axis for x > 3. The area of R is (A) 1 (B) (C) (D) -«2e (E) infinite 62 GO ON TO THE NEXT PAGE.
9 Calculus BC Section I 12. Which of the following series converges for all real numbers x? n=l n=\n n=l (D) n\ o X + 1 j ij. ax Ji x e2-1 e2 +1 ( \\ i /p'l c ~ A v'vj ^ t,-t>y ^ rn e2 + 2 e2-1 2e2-8e + 6 k*-j 0 \) i (C') 0 2 e2 3^ GO ON TO THE NEXT PAGE. 63
10 Calculus EC X rw The polynomial function / has selected values of its second derivative /" given in the table above. Which of the following statements must be true? (A) / is increasing on the interval (0, 2). (B) / is decreasing on the interval (0, 2). (C) / has a local maximum at x = 1. (D) The graph of / has a point of inflection at x = 1. (E) The graph of / changes concavity in the interval (0, 2). 15. If f(x] = (In*)2, then f"(je) = (A) (C) (D) (E) - 64 GO ON TO THE NEXT PAGE.
11 Calculus BC Section I 16. What are all values of x for which the series converges? (A) -1 < x < 1 (B) x > 1 only (C) x > 1 only (D) x < -1 and x > 1 only (E) x < -1 and * > Let /z be a differentiable function, and let / be the function defined by f(x) - h(x - 3j. Which of the following is equal to f'(2)? (A) h'(l) (B) 4h'(l) (C) 4A'(2) (D) h'(4) (E) 4A'(4) GO ON TO THE NEXT PAGE. 65
12 Calculus EC 18. In the xy-plane, the line x + y = k, where k is a constant, is tangent to the graph of y - x + 3x + 1. What is the value of k? (A) -3 (B) -2 (Q -1 (D) 0 (E) Jl lx (2x-3)(x- dx = (A) ln 2x n jc C (B) 31n 2x n ;c C (C) 3In 2;t-3-21n jc C 6 (D) - (2x - 3)2 2Y + C (E) - (2jc - + C 66 GO ON TO THE NEXT PAGE.
13 Calculus EC Section I 20. What is the sum of the series 1 + In 2 + ^", + + ^" +? 2! n (A) In 2 (B) In (1 + In 2) (C) 2 (D) e2 (E) The series diverges A particle moves along a straight line. The graph of the particle's position x(t) at time t is shown above for 0 < t < 6. The graph has horizontal tangents at t = 1 and t = 5 and a point of inflection at t = 2. For what values of t is the velocity of the particle increasing? (A) 0 < t < 2 (B) 1 < t < 5 (C) 2<t <6 (D) 3 < t < 5 only (E) 1 <? < 2 and 5 < t < 6 Is illegal. GO ON TO THE NEXT PAGE. 67
14 Calculus BC X /«/'(*) *(*) ^w _1 22. The table above gives values of/ /', g, and g' for selected values of x. If /'(^)g(^;) d* = 5, then (A) -14 (B) -13 (C) -2 (D) 7 (E) If f(x) = xsin(2x), which of the following is the Taylor series for / about x = 0? x3 x5 x1 (A) * :: 4! 6! 32x5 128*7 (C) 2x-^- + 3! 5! 7! (D) 4 o i 3! 5! 7! 3! 5! 7! 68 GO ON TO THE NEXT PAGE.
15 Calculus EC Section I O 24. Which of the following differential equations for a population P could model the logistic growth shown in the figure above? ftp, (A) - = 0.2P P2 (B) - = at (C) - = 0.2P P (D) - = QAP P (E) - - = 0.1P P at ex + d for x < 2 2 e -ex for x > Let / be the function defined above, where c and d are constants. If/ is differentiable at x = 2, what is the value of c + d? (A) -4 (B) -2 (C) 0 (D) 2 (E) 4 GO ON TO THE NEXT PAGE. 69
16 Calculus BC 26. Which of the following expressions gives the total area enclosed by the polar curve r = sin 9 shown in the figure above? (A) r 2 Jo (B) (D) I*sin4Ode sm46d6 70 GO ON TO THE NEXT PAGE.
17 Calculus BC Section I dy i 27. Which of the following could be the slope field for the differential equation -~- = y - 1? (A) / i / / i / i (B) X X X X X X X 2x x x x x x x I I I I I I I _2 I I I I I I I (D) \- i \- I \- \- l \ \- \- \- \ \ 2 \ \- - \- \- \- \i\\\\--- \- \\v\\\*.- _2 3 2' '///ill - - ' / / / i i i '-///iii '-///ill -"////// "///ill -'-///ill - ' '! 1 I / I ^ tov A --// / / 12 -^ / / / i l l --'///ill --'//// / / - '//rill ' - / / / / i t - " / / / i l l (E) I I I I I I I I I I I I I I I I I I I I I i i i i i i i / / / i i i / i i i i i i i \x\\\\ \2 GO ON TO THE NEXT PAGE. 71
18 Calculus BC 28. In the xy-plane, a particle moves along the parabola y = x2 - x with a constant speed of 2VT() units per second. If > 0, what is the value of -~ when the particle is at the point (2, 2)? Li I Ctl (A) (B) 2VlO (C) 3 (D) 6 (E) 6VTO END OF PART A OF SECTION I 72 any part of this page Is illegal.
19 Calculus EC Section I PartB CALCULUS BC SECTION I, Part B Time 50 minutes Number of questions 17 A GRAPHING CALCULATOR IS REQUIRED FOR SOME QUESTIONS ON THIS PART OF THE EXAM. Directions: Solve each of the following problems, using the available space for scratch work. After examining the form of the choices, decide which is the best of the choices given and fill in the corresponding oval on the answer sheet. No credit will be given for anything written in the exam book. Do not spend too much time on any one problem. BE SURE YOU ARE USING PAGE 3 OF THE ANSWER SHEET TO RECORD YOUR ANSWERS TO QUESTIONS NUMBERED YOU MAY NOT RETURN TO PAGE 2 OF THE ANSWER SHEET. In this exam: (1) The exact numerical value of the correct answer does not always appear among the choices given. When this happens, select from among the choices the number that best approximates the exact numerical value. (2) Unless otherwise specified, the domain of a function / is assumed to be the set of all real numbers x for which /(jc) is a real number. (3) The inverse of a trigonometric function / may be indicated using the inverse function notation /-1 or with the prefix "arc" (e.g., sin"1* = arcsin x ). any part o, this page is iiiega,. GO
20 PartB Calculus EC y =/'(*) 76. The graph of /', the derivative of a function /, is shown above. The domain of / is the open interval 0 < x < d. Which of the following statements is true? (A) / has a local minimum at x = c. (B) / has a local maximum at x - b. (C) The graph of / has a point of inflection at (a,/(a)). (D) The graph of / has a point of inflection at (b,f(b)}. (E) The graph of / is concave up on the open interval (c,d). 77. Water is pumped out of a lake at the rate R(t) = 12A cubic meters per minute, where t is measured in minutes. How much water is pumped from time f = 0to? = (A) cubic meters (B) cubic meters (C) cubic meters (D) cubic meters (E) cubic meters 74 GO ON TO THE NEXT PAGE.
21 Calculus BC Section I PartB (3,1) -2-1 V Graph off 78. The graph of a function / is shown above. For which of the following values of c does lim f(x) = 1? X >C (A) (B) 0 only 0 and 3 only (C) -2 and 0 only (D) -2 and 3 only (E) -2, 0, and Let / be a positive, continuous, decreasing function such that an = f(n). If /jan converges to k, which of the n=\) f"f(x)dx = k following must be true? (A) lim an = k (C).00 /(jr.) dx diverges. (D).00! f(x) dx converges.,00 (E) J f(x}dx = k GO ON TO THE NEXT PAGE. 75
22 PartB Calculus BC 80. The derivative of the function / is given by f'(x) = x coslx j. How many points of inflection does the graph of / have on the open interval (-2, 2)? (A) One (B) Two (C) Three (D) Four (E) Five 81. Let / and g be continuous functions for a < x < b. If a < c < b, i f(x) dx = P, > f(x) dx - Q, J a Jc \ dx = R, and f g(x) dx = S, then ['(/(*) - g(x)} dx = Ja Jc Ja (A) P -Q + R-S (B) P-Q-R + S (C) P-Q-R-S (D) P + Q-R-S (E) P + Q-R + S 76 GO ON TO THE NEXT PAGE.
23 Calculus BC Section I PartB 82. If an diverges and 0 < an < bn for all n, which of the following statements must be true? n=\a) Xl"1)" an converges. n=\) (-!)"& converges. n=l (C) %(-\}nbn diverges. n=\) bn converges. (E) bn diverges. 83. What is the area enclosed by the curves y - x Sx +18;c-5 and y = x (A) (B) (C) (D) (E) 32 GO ON TO THE NEXT PAGE. 77
24 PartB Calculus BC 84. Let / be a function with /(3) = 2, /'(3) = -1, /"(3) = 6, and /'"(3) = 12. Which of the following is the third-degree Taylor polynomial for / about x = 3? (A) 2 - (* - 3) + 3(x - 3)2 + 2(jc - 3)3 (B) 2 - (* - 3) + 3(* - 3)2 + 4(;c - 3)3 (C) 2 - (jc - 3) + 6(x - 3)2 + 12(jc - 3)3 (D) 2 - x + 3x2 + 2x3 (E) 2 - x + 6x2 + I2x3 85. A particle moves on the jc-axis with velocity given by v(t) = 3?4-1 If2 +9t - 2 for -3 < t < 3. How many times does the particle change direction as / increases from -3 to 3? (A) Zero (B) One (C) Two (D) Three (E) Four 78 GO ON TO THE NEXT PAGE.
25 Calculus BC Section I PartB 86. On the graph of y = f(x], the slope at any point (x, y) is twice the value of x. If /(2) = 3, what is the value of /(3)? (A) 6 (B) 7 (C) 8 (D) 9 (E) An object traveling in a straight line has position x(t) at time /. If the initial position is x(0) = 2 and the velocity of the object is v(t) = \ + t, what is the position of the object at time t = 3? (A) (B) (C) (D) (E) GO ON TO THE NEXT PAGE. 79
26 PartB Calculus BC For all values of x, the continuous function / is positive and decreasing. Let g be the function given by g(x) - \) dt. Which of the following could be a table of values for g The function / is continuous for -2 < x < 2 and /(-2) = /(2) = 0. If there is no c, where -2 < c < 2, for which /'(c) = 0, which of the following statements must be true? (A) For -2 < k < 2, /'(&) > 0. (B) For -2 < k < 2, f'(k) < 0. (C) For -2<k<2, f'(k) exists. (D) For -2 < k < 2, f'(k) exists, but /' is not continuous. (E) For some k, where -2 < k < 2, f'(k) does not exist. 80 GO ON TO THE NEXT PAGE.
27 Calculus BC Section I PartB X /(*) *(*) /'(*) *'(*) -I _ The table above gives values of the differentiable functions / and g and of their derivatives /' and g', at selected values of x. If h(x) = f(g(x)), what is the slope of the graph of h at x = 2? (A) -10 (B) -6 (C) 5 (D) 6 (E) Let / be the function given by f(x) = does / attain a relative maximum? 1/3 cos -^-\dt for < x < 1. At which of the following values of x \t ) -> (A) and (B) 0.4 and (C) 0.4 only (D) (E) GO ON TO THE NEXT PAGE. 81
28 Part B Calculus EC 92. The figure above shows the graphs of the functions / and g. The graphs of the lines tangent to the graph of g at x = -3 and x = 1 are also shown. If B(x) = g(f(x)), what is J5'(-3)? (D) 4 (E) ^ END OF SECTION I AFTER TIME HAS BEEN CALLED, TURN TO THE NEXT PAGE AND ANSWER QUESTIONS
29 Calculus BC Section I Part B 93. Which graphing calculator did you use during the exam? (A) Casio 6300, Casio 7300, Casio 7400, Casio 7700, TI-73, TI-80, or TI-81 (B) Casio 9700, Casio 9800, Sharp 9200, Sharp 9300, TI-82, or TI-85 (C) Casio 9750, Casio 9850, Casio 9860, Casio FX 1.0, Sharp 9600, Sharp 9900, TI-83, TI-83 Plus, TI-83 Plus Silver, TI-84 Plus, TI-84 Plus Silver, TI-86, or TI-Nspire (D) Casio 9970, Casio Algebra FX 2.0, HP 38G, HP 39 series, HP 40G, HP 48 series, HP 49 series, HP 50 series, TI-89, TI-89 Titanium, or TI-Nspire CAS (E) Some other graphing calculator 94. During your Calculus BC course, which of the following best describes your calculator use? (A) I used my own graphing calculator. (B) I used a graphing calculator furnished by my school, both in class and at home. (C) I used a graphing calculator furnished by my school only in class. (D) I used a graphing calculator furnished by my school mostly in class, but occasionally at home. (E) I did not use a graphing calculator. 95. During your Calculus BC course, which of the following describes approximately how often a graphing calculator was used by you or your teacher in classroom learning activities? (A) Almost every class (B) About three-quarters of the classes (C) About one-half of the classes (D) About one-quarter of the classes (E) Seldom or never 96. During your Calculus BC course, which of the following describes the portion of testing time you were allowed to use a graphing calculator? (A) All or almost all of the time (B) About three-quarters of the time (C) About one-half of the time (D) About one-quarter of the time (E) Seldom or never 83
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